40Cr中空锚杆用无缝钢管的组织-性能协同控制生产方法
By coordinating the spheroidizing annealing, cold deformation and recrystallization processes of 40Cr seamless steel pipes, the problem of unstable mechanical properties caused by isolated parameter settings in the existing technology has been solved, and high consistency and excellent torsional resistance of seamless steel pipes for hollow anchor bolts have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-03
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the manufacturing process of 40Cr seamless steel pipes lacks cross-process collaborative design, resulting in poor batch consistency of mechanical properties and unstable microstructure, making it difficult to meet the engineering requirements of complex torsional stress conditions.
By establishing a parameter quantification constraint model for spheroidizing annealing, cold deformation, and recrystallization processes, and by adopting specific heating and cooling rates, holding times, and pass allocation coefficients, coordinated control of each process can be achieved, ensuring the stability of the microstructure and the uniformity of mechanical properties.
This improved the quality consistency of seamless steel pipes used for hollow anchor bolts, enhanced their torsional resistance, and ensured the yield strength, tensile strength, and elongation of the finished steel pipes, meeting the actual needs of support projects.
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Figure CN122060991B_ABST
Abstract
Citation Information
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